Tremors beneath Northern California show hidden plate movement, helping scientists better understand where future big ...

Focusing on an area off the coast of Crescent City, California, the researchers used autonomous and remotely operated ...

A hidden chunk of an ancient tectonic plate is stuck to the Pacific Ocean floor and sliding under North America, complicating ...

Many of the state's largest earthquakes have struck near the junction, where the Pacific, North American and Gorda plates ...

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San Andreas fault meets the ...

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San ...

At least 40 earthquakes have hit a California town in the last day. The epicenter is located in a region of the US where the ...

Along a quiet stretch of central California, the tiny town of Parkfield sits atop one of the most closely watched pieces of ...

How much fresh water is in the United States? It's a tough question, since most of the water is underground, accessible at ...

Ranchers say the real conflict is with the rules and whether agencies can keep up, especially as depredations undermine the ...

Earth scientist Andrea Donnellan studies the surface of the Earth from the sky to better understand earthquakes, including ...